What are Solutions to Dangers the Bridge Girder Launcher Encountered with as Installing Girders?

During the process to install precast concrete box girder for bridge girder launcher, there exists a lot of dangers. Only solve them, we can smoothly finish erecting the bridge and ensure the life and property safety of our employees.

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HZQ32-165t bridge girder launcher

Dangerous situation:

1. Bridge girder launcher collides with box girder

2. Auxiliary support leg and auxiliary launching nose bear capacity when the bridge girder launcher installs girders

3. Hydraulic system is out of control

4. Steel wire rope of winch has defection

5. Lateral impact on the bridge girder launcher from the box girder

6. The box girder drops directly on the jack for adjusting beam

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Precautionary Measures:

1.In the whole process of feed-in girders, it is necessary to specially assign someone to watch running state of overhead crane, the running position of concrete box girder, so that concrete box girder won’t collide with the bridge girder launcher at all.

2. It is forbidden to give a command of continuous lifting and stop movement so that longitudinal impact on the bridge girder launcher will be reduced. There should have test run before installing girder

3. It is forbidden for hydro-cylinder and steel wheel to bear capacity when the bridge girder launcher installs girders

4. In the process of dropping girders, it is necessary to specially assign someone to watch the running status of winch and brake on the overhead crane for lifting girders

5. There should have enough safety factor and storage for winch steel wire rope

6. The dropping girder is not allowed to collide with front support leg and installed concrete box girder

7. The box girder is not allowed to drop directly on the jack. When the box girder drops close to the jack, 4 jacks begin to jack at the same time until they bear the capacity of the drooping girder.